diff --git a/deepfriedmarshmallow/__init__.py b/deepfriedmarshmallow/__init__.py
index e496861..583547a 100644
--- a/deepfriedmarshmallow/__init__.py
+++ b/deepfriedmarshmallow/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "1.0.0beta1"
+__version__ = "1.0.0dev9"
 
 from deepfriedmarshmallow.import_patch import deep_fry_marshmallow
 from deepfriedmarshmallow.jit import JitContext, generate_method_bodies
diff --git a/pyproject.toml b/pyproject.toml
index 55cf70f..f1b13d4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "DeepFriedMarshmallow"
-version = "1.0.0beta1"
+version = "1.0.0dev9"
 description = "A plug-and-play JIT implementation for Marshmallow to speed up data serialization and deserialization"
 authors = ["Maciej Wilczynski <oss@lupin.rocks>", "Roy Williams <rwilliams@lyft.com>"]
 readme = "README.md"